Micronoids are microscopic alien creatures that originate from another dimension and are the masterminds behind the alien invasion of Mega-Primus. They exist in the bloodstreams of all aliens, and they utilize psionic powers to control the minds of the host. By themselves, Micronoid Aggregate is no more than a mass of slime made up of billions of Micronoids. Their combined psionic powers allow them to conduct psi attacks, but they are very weak, and it will take a lot of time for them to mind control an X-Com agent. But all in all, as a unit, they are easy to kill by any means sans psionics.